Analysis of the vortices in the inner flow of reversible pump turbine with the new omega vortex identification method
Analysis of the vortices in the inner flow of reversible pump turbine with the new omega vortex identification method
复制标题
新的omega涡识别方法分析可逆水泵水轮机内流涡
DOI：
10.1007/s42241-018-0046-1
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发表时间：
2018-05
影响因子：
2.5
通讯作者：
Xiaoze Du
中科院分区：
文献类型：
--
作者：
Yuning Zhang;Kaihua Liu;Jinwei Li;Haizhen Xian;Xiaoze Du
可逆泵水轮机在抽水蓄能电站中得到了广泛的应用。可逆泵水轮机在不同运行模式之间的频繁切换，会产生压力波动大、轴摆、叶轮损坏等不稳定性问题。这种不稳定性与可逆泵水轮机在发电模式下通道内产生的涡流有关。本文将一种新的欧米茄涡识别方法应用于可逆泵水轮机的涡分析。所采用算法的主要优点是它与不同工作模式下涡识别的选取值在物理上是独立的。通过在可逆泵水轮机的整个通道中设置相同的ω值，可以识别弱涡和强涡。选取几种典型导叶开度下的五种典型模式（涡轮模式、失控模式、涡轮制动模式、零流量模式和反泵模式）进行分析比较。对比了不同模式和不同导叶开度对可逆泵涡轮涡分布的定性影响和涡面积的定量影响。研究结果表明，新的omega方法可以成功地应用于可逆泵水轮机的涡识别。
Reversible pump turbines are widely employed in the pumped hydro energy storage power plants. The frequent shifts among various operational modes for the reversible pump turbines pose various instability problems, e.g., the strong pressure fluctuation, the shaft swing, and the impeller damage. The instability is related to the vortices generated in the channels of the reversible pump turbines in the generating mode. In the present paper, a new omega vortex identification method is applied to the vortex analysis of the reversible pump turbines. The main advantage of the adopted algorithm is that it is physically independent of the selected values for the vortex identification in different working modes. Both weak and strong vortices can be identified by setting the same omega value in the whole passage of the reversible pump turbine. Five typical modes (turbine mode, runaway mode, turbine brake mode, zero-flow-rate mode and reverse pump mode) at several typical guide vane openings are selected for the analysis and comparisons. The differences between various modes and different guide vane openings are compared both qualitatively in terms of the vortex distributions and quantitatively in terms of the areas of the vortices in the reversible pump turbines. Our findings indicate that the new omega method could be successfully applied to the vortex identification in the reversible pump turbines.
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影响因子：
8.4
作者：
Yuning Zhang;Yuhang Gao;Xiaoze Du
通讯作者：
Xiaoze Du
气体、蒸汽或其混合物的气泡流中的声波传播
影响因子：
8.4
作者：
Yuning Zhang;Zhongyu Guo;Yuhang Gao;Xiaoze Du
通讯作者：
Xiaoze Du
DOI：
10.1088/1755-1315/22/3/032046
发表时间：
2014-03
期刊：
IOP Conference Series: Earth and Environmental Science
影响因子：
--
作者：
C. Gentner;M. Sallaberger;C. Widmer;B. J. Bobach;H. Jaberg;Jürgen Schiffer;Florian Senn;M. Guggenberger
通讯作者：
C. Gentner;M. Sallaberger;C. Widmer;B. J. Bobach;H. Jaberg;Jürgen Schiffer;Florian Senn;M. Guggenberger
DOI：
10.1007/s11433-015-5754-8
发表时间：
2016-01
期刊：
Science China Physics, Mechanics & Astronomy
影响因子：
--
作者：
J. Wang;Y.G. Shen;F. Song;F.J. Ke;Y.L. Bai;C. Lu
通讯作者：
C. Lu
影响因子：
8.4
作者：
Yuning Zhang;Yuning Zhang
通讯作者：
Yuning Zhang